Bay Area ranks in US cities with worst air quality

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Bay Area ranks in US cities with worst air quality

(KRON) – Nearly four in ten Americans lived in areas with unhealthy levels of air pollution in recent years, a new report ranking cities for their air quality by the American Lung Association found.  Within that list, six out of ten of the most polluted cities in America were in California.  Many might associate higher rates of air pollution with southern California, where cities like Los Angeles have consistently ranked as having some of the wo…